Hitachi Automotive Systems, Ltd.

Shinsaku Tsukada

Yoshihiko Akagi

Shigemi Oono

Sadato Horiuchi

Toshio Hori

Yoichi Iihoshi

Introduction of a low fuel consumption technique such as downsizing turbos and idling stop decreases an intake pipe negative pressure (pump loss) of an internal combustion engine, and results in difficulty in emitting (evaporative fuel purge) a volatile fuel (volatile fuel) in a fuel tank by the negative pressure of the intake pipe of the internal combustion engine. A control device includes: a purge control unit which controls a purge valve which emits a volatile fuel of a fuel tank or a canister to an intake pipe of an internal combustion engine; and a power transmission control unit which controls a power transmission mechanism between the internal combustion engine and a drive wheel, and, in a state where the power transmission control unit disconnects a clutch, and the vehicle is coasting, the purge control unit opens the evaporative fuel valve and purges an evaporative fuel to the intake pipe.

Control device that stops fuel injection to an engine during coasting

An onboard control device has a drive manipulated variable detection unit () for determining a drive manipulated variable manipulated by a driver to impart a propulsive force to a vehicle, a command value calculation unit () for calculating a command value for a drive source of the vehicle based on the drive manipulated variable, a propulsive force control unit () for controlling the propulsive force based on the command value, operating state detection units () for determining the operating states of the drive source, a drive manipulation rate of change calculation unit () for calculating the rate of change in drive manipulation, an operating state rate of change calculation unit () for calculating the rate of change in the operating state, and an abnormality detection unit () for detecting abnormalities in the drive source based on the rates of change in drive manipulation and the operating state.

Onboard control device

To quickly determine whether or not the propulsive force of a vehicle drive source is abnormal. The onboard control device pertaining to the present invention has a drive manipulated variable detection unit for detecting or estimating a drive manipulated variable manipulated by a driver in order to impart a propulsive force to a vehicle, a command value calculation unit for calculating a command value for a drive source of the vehicle on the basis of the drive manipulated variable, a propulsive force control unit for controlling the propulsive force of the drive source on the basis of the command value, operating state detection units for detecting or estimating the operating states of the drive source, a drive manipulation rate of change calculation unit for calculating the rate of change in drive manipulation, an operating state rate of change calculation unit for calculating the rate of change in the operating state, and an abnormality detection unit for detecting abnormalities in at least the drive source on the basis of the rate of change in drive manipulation and the rate of change in the operating state.

Growing community of inventors

Hitachinaka, Japan

Shinsaku Tsukada